Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 1 - 1.8 - Other Types of Inequalities - 1.8 Exercises - Page 147: 7


a)yes b)no c)no d)yes

Work Step by Step

a) $\frac{5+2}{5-4}=\frac{7}{1}=7\geq3$, thus yes b) $\frac{4+2}{4-4}=\frac{6}{0}$, this is undefined, thus it cannot be a solution c) $\frac{-4.5+2}{-4.5-4}=\frac{-2.5}{-8.5}\approx0.29\lt3$, thus no d) $\frac{4.5+2}{4.5-4}=\frac{6.5}{0.5}=13\geq3$, thus yes
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